Lenovo announces a recall of batteries found in over 20 ThinkPad laptop models sold between October 2010 and April 2011, due alleged overheating and fire hazards. Replacement batteries can be obtained for free, regardless of warranty status. Affected models include the ThinkPad T410, T420, T510, W510, X100E, X120E, X200, X201, and many more. Click here to view the full list.